Former Health and Human Services Secretary Kathleen Sebelius acknowledged Friday that she made mistakes leading up to the rollout of the Affordable Care Act, worrying too much about whether there’d be a market for Obamacare and spending “too little time clearly on the technology side.”“I sure made some mistakes along the way in terms of focusing on some things and not on others,” she said at the Aspen Ideas Festival. Instead of confirming what she was being told about HealthCare.gov’s readiness “was actually accurate and getting enough eyes and ears on that,” she said she concentrated on the insurers, consumers and regulators who needed to come together in the health exchanges.